Upgrading and Repairing PCs is the runaway best-selling PC hardware book of all time and one of the best-selling computer books ever! This 15th Edition is loaded with the most up-to-date hardware information anywhere. World-renowned PC hardware expert Scott Mueller has taught thousands in his weeklong seminars and millions through his books, videos and articles. This edition contains hundreds of pages of new material, including the latest in processor and motherboard technologies.